Question

0,
7. The monthly incomes of A and B are in the ratio
of 5 : 4, their monthly expenses are in the ratio of
19 : 21, and their monthly savings are in the ratio
of 37 : 18. If the total annual savings of A and B is
66000, A's monthly income is​

Answer 1

Step-by-step explanation:

savings ratio = 37: 18 (monthly)

total annual saving- 66000 ,monthly savings- 66000/12= 5500

A's savings - 37/55 × 5500 = 3700 & B's savings - 18/55 × 5500 = 1800

savings= income- expenses

if,income be 5x & 4x and expenses be 19y & 21 y

5x-19y= 3700

4x-21y= 1800

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105x - 19× 21 y = 77700

76x - 19× 21 y = 34200

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x = 43500/29 = 1500

A's income = 5x = 5× 1500 = 7500 ₹